<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
    <title>Bootstrap 实例 - 警告（Alerts）</title>
	<link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script>
	<script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

  <div class="alert alert-success"><a href="#">成功！很好地完成了提交。</a></div>
    <div class="alert alert-info">信息！请注意这个信息。</div>
    <div class="alert alert-warning">警告！请不要提交。</div>
    <div class="alert alert-danger">错误！请进行一些更改。</div>

    <div class="alert alert-success alert-dismissable">
        <button type="button" class="close" data-dismiss="alert"
         aria-hidden="true">
            &times;
        </button>
        成功！很好的完成提交。
    </div>
    <div class="alert alert-info alert-dismissable">
        <button type="button" class="close" data-dismiss="alert"
        aria-hidden="true">
        &times;
        </button>
        信息！请注意这个信息。
    </div>
    <div class="alert alert-warning alert-dismissable">
        <button type="button" class="close" data-dismiss="alert"
        aria-hidden="true">
        &times;
        </button>
        警告！请不要提交。
    </div>
    <div class="alert alert-danger alert-dismissable" >
        <button type="button" class="close" data-dismiss="alert"
        aria-hidden="true">
        &times;
        </button>
        错误！请进行一些更改。
    </div>
</body>
</html>